DNA derived fluorescent bio-dots for sensitive detection of mercury and silver ions in aqueous solution

CORC > 新疆理化技术研究所 > 中国科学院新疆理化技术研究所 > 中国科学院特殊环境功能材料与器件重点试验室

	DNA derived fluorescent bio-dots for sensitive detection of mercury and silver ions in aqueous solution
	Song, T (Song, Ting)1; Zhu, XF (Zhu, Xuefeng)1; Zhou, SH (Zhou, Shenghai)1; Yang, G (Yang, Guang)1; Gan, W (Gan, Wei)1; Yuan, QH (Yuan, Qunhui)1
刊名	APPLIED SURFACE SCIENCE
	2015
卷号	347 期号:8 页码:505-513
关键词	DNA derived bio-dots Heavy metal ion Fluorescent sensing T-Hg-T C-Ag-C
通讯作者	Zhu, XF
英文摘要	Inspired by the high affinity between heavy metal ions and bio-molecules as well as the low toxicity of carbon-based quantum dots, we demonstrated the first application of a DNA derived carbonaceous quantum dots, namely bio-dots, in metal ion sensing. The present DNA-derived bio-dots contain graphitic carbon layers with 0.242 nm lattice fringes, exhibit excellent fluorescence property and can be obtained via a facile hydrothermal preparation procedure. Hg(II) and Ag(I) are prone to be captured by the bio-dots due to the existence of residual thymine (T) and cytosine (C) groups, resulting in a quenched fluorescence while other heavy metal ions would cause negligible changes on the fluorescent signals of the bio-dots. The bio-dots could be used as highly selective toxic-free biosensors, with two detecting linear ranges of 0-0.5 mu M and 0.5-6 mu M for Hg(II) and one linear range of 0-10 mu M for Ag(I). The detection limits (at a signal-to-noise ratio of 3) were estimated to be 48 nM for Hg(II) and 0.31 mu M for Ag(I), respectively. The detection of Hg(II) and Ag(I) could also be realized in the real water sample analyses, with satisfying recoveries ranging from 87% to 100%.
收录类别	SCI
WOS记录号	WOS:000356058500067
内容类型	期刊论文
源URL	[http://ir.xjipc.cas.cn/handle/365002/4884]
专题	新疆理化技术研究所_中国科学院特殊环境功能材料与器件重点试验室
作者单位	1.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China 4.Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Song, T ,Zhu, XF ,Zhou, SH ,et al. DNA derived fluorescent bio-dots for sensitive detection of mercury and silver ions in aqueous solution[J]. APPLIED SURFACE SCIENCE,2015,347(8):505-513.
APA	Song, T ,Zhu, XF ,Zhou, SH ,Yang, G ,Gan, W ,&Yuan, QH .(2015).DNA derived fluorescent bio-dots for sensitive detection of mercury and silver ions in aqueous solution.APPLIED SURFACE SCIENCE,347(8),505-513.
MLA	Song, T ,et al."DNA derived fluorescent bio-dots for sensitive detection of mercury and silver ions in aqueous solution".APPLIED SURFACE SCIENCE 347.8(2015):505-513.